Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Festo
The Festo 558668 is a straight-design industrial component featuring a 6 mm nominal width and a push-pull structural design for 8 mm outside diameter pneumatic tubing connecting to an external thread G3/8 port with a sealing ring on the screwed plug. This pack size of 10 operates within a pressure range of -0.95 bar to 16 bar and temperatures between -20 °C and 70 °C using compressed air meeting ISO 8573-1:2010 [7:-:-], accommodating lubricated operation and maintaining a CRC 1 corrosion resistance class. The RoHS-compliant 20.1 g assembly includes an external hexagon SW14 and internal hexagon AF 6 mounting configuration requiring a 9 Nm nominal tightening torque with a ±20% tolerance and features a silver releasing ring. Submit the exact part number, quantity, and application requirements to request a quote for this item.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 558668. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.